Patent · US Active

Mechanical disconnect for rotation drive

US11898405B2 · kind B2 · utility

0Cited by

6References

20Claims

0Family size

Assignee

The Charles Machine Works, Inc. · US

Inventors

David L. Horst · Ashland, US
B J Burky · Garden Isle, US
Tim Casey · San Jose, US
Richard B. Gentry · Jeromesville, US
Stuart Riggenbach · Wooster, US
Aaron Edward Traxler · Columbia Station, US

Key dates

Filing date	Jun 13, 2022
Grant date	Feb 13, 2024
Priority date	—
Expiry date	Jun 13, 2042

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B19/08
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A horizontal directional drilling system. The system has a pilot drill and an exit side drill, with a drill string extending between them. A backreamer is positioned between the drills to enlarge a borehole. The pilot drill pulls and rotates the backreamer. The exit side drill adds segments to the product pipe and pushes the product pipe into the enlarged borehole. The exit side drill is equipped with a rotational disconnect. The disconnect is engaged to allow torque transfer between a motor and a spindle when adding segments to the product pipe. The disconnect is disengaged to prevent torque transfer between the motor and the spindle when pushing the product pipe into the enlarged borehole.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.